Tvp5151 TV decoder output have no color

[kadonjoy]

hi,all!

Hardware:marsboard ,imx6q ipu

Software:android 4.0

Display:800*480 LCD 24bpp

I am working about tvp5151,but the output video only have white and black.I have been writing tvp5151 driver according to mxc_v4l2_capture,CSI->IC->MEM

thanks for everyone who can help me!

[kamillulko]

What video standard signal do you feed to TVP5151? This could happen if you configure incorrect video STD in the chip via i2c. Also what kind of signal do you send to the TVP5151? Is it composite or s-video? If you for example feed composite but set decoder for s-video you will get black and white video, same if you set for s-video but don't feed chrominance signal properly.

[kadonjoy]

hi kamil luiko!I selected the camera sensor ' output is cvbs signal (ntsc), connecting to tvp5151's pin 1.Tvp5151 output format is bt.656